Description
Core logs and photos from the EGS Collab project Experiment 2 for the Top Vertical well (TV4100) and the Top Horizontal well (TV 4100) on the 4100 Level of SURF (the Sanford Underground Research Facility). The core logs are stored in a single PDF file with 5-ft run intervals. In the monitoring well IDs, "O" indicates that the well is orthogonal to the anticipated fracture plane, "T" refers to top, and "H" refers to horizontal. A core log CT scan for TV4100 and a layout image of the 4100 wells are included as well.
Logs include: experiment number; borehole ID; depth interval; run number; final packed core box number; scribe line (yes/no; red-on-right convention); logging dates; logger initials; as well as sketches of core foliation, folding, and fracturing with additional details and notes on other features of interest.
Shift reports include: date, location, personnel, summary of site activity, and field notes.
Resources
| Name | Format | Description | Link |
|---|---|---|---|
| 4100 Drilling Shift Reports.zip | ZIP | Shift Reports for EGS Collab Experiment 2 4100 level activity from June 25, 2019 to July 3, 2019. | Open resource |
| 4100 Well Layout.png | PNG | Digram of the 4100ft surface level well layout. Includes 4100 Drift, Alcove, Yates Shaft, TH4100, and TV4100. | Open resource |
| TH4100 Core Log.pdf | Core log for EGS Collab Experiment 2 Top Horizontal 4100 level well (TV4100). Logged and annotated from 0 to 35 ft. | Open resource | |
| TH4100 Core Photos.zip | ZIP | Core photos for EGS Collab Experiment 2 Top Horizontal 4100 level well (TH4100). | Open resource |
| TV4100 Core Log.pdf | Core log for EGS Collab Experiment 2 Top Vertical 4100 level well (TV4100). Logged and annotated from 0 to 165 ft. | Open resource | |
| TV4100 Core Photos.zip | ZIP | Core photos for EGS Collab Experiment 2 4100 level Top Vertical well (TV4100). This zip files include 2 pdf documents describing adjustments made to the TV4100 well during drilling: 2.4ft are added to the depths of runs 1 through 6 and 0.2ft are added to the depths of run 1 through 31. Core photos are annotated to reflect depth adjustments. | Open resource |
| TV 4100 Core Log CT.pdf | Core Log CT scan for EGS Collab Experiment 2 Top Vertical 4100 Orthogonal Top (TV4100-OT) and Azimuthal Top (TV4100-ATV). Logged from 1m to 5m. | Open resource |